Machine for bending shafts.



No. 716.6l2. Patented Dsc. 23, |902. C. N. ALLERDING. MACHINE FDR BENDING SHAFTS.

(Application led June 27, 1901.)

4 Sheets-Sheet l.

(No Model.)

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un. 7mm. 'Patented nec. 23,1902.

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MACHINE FOR BENDING SHAFTS.

(Application led June 27, 1901.)

(Ro Mgdal.) 4 Sheets-Sheet 2.

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Patented Dec. 23, |902.

No. 716,6l2.

C. N. ALLERDING.

MACHINE FOR BENDING SHAFTS.

(Application led June 27. 1901.)

4 Sheets-Sheet 3.

(No Model.)

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N0. 7l6,6|2. Patented DBC. 23, |902.

' C. N. ALLERDING.

MACHINE FOR BENDING SHAFTS.

(Application iled June 27. 1901.1

(No Modal.)

limitan 'Artnr OFFICE.'

OLETUS N. ALLERDING, OF MOUNT VERNON, OHIO, ASSIGNOR TO PARK,

COLVILLE a HERRIOK COMPANY, OF MOUNT RATION OF OHIO.

VERNON, OIAIIO, A CORPO- WlACl-HNE IFOR BENDING SHAFTS.

SPECIFICATION forming part of Letters Patent No. 716,612, dated December 23, 1902.

Application iled June 27,1901.

To @ZZ whom t may concern:

Be it known that I, CLETUs N. ALLERDING, a citizen of the United States, residing at Mount Vernon, in the county of Knox and State of Ohio, have invented certain new and useful Improvements in Machines for Bending Vehicle-Shafts, of which the followingis a specification.

The objects of my invention are to provide ro a machine of this character to obtain a uniform bend of the heel, body, and tip of the shafts; to provide easy and speedy adjustment of the machine and bending forms to adapt the machine for bending shafts of dift5 ferent lengths; to provide means for upsetting or stoving the shaft and simultaneously bending the tip of the shaft; and with these and minor objects in view my invention consists of the parts and combination of parts, 2o as will be hereinafter more fully set out.

Figure l is a top plan view of my improved machine. Fig. 2 is a vertical longitudinal section. of the saine on the line 2 2, Fig. l. Fig. 3 is a detail sectional View ofthe heelbending mechanism. Fig. 4 is a top plan view of one of the heel-formers. Fig. 5 is aseotional view of the former on theline 5 5. Fig. 6 is a top plan view of a pair of shafts secured in place in the tip and belly-band former, 3o the heels of the shaft being secured in the bent position by means of staves. Fig.7 is a side elevation of the construction shown in Fig. 6. Fig. 8 is a perspective View of a catch adapted to fasten to the heel-strip and former. Fig. 9 is a central vertical section of the same shown in engagement with one of the heel-formers, the heel-former being shown in dotted lines. Fig. 10 is a side elevation of a portion of the trip-former de- 4o tached with the tip of the shaft shown in position just before the former is operated. Fig. 11 is a detail perspective view of the hinge and stoving device, which is adapted to be secured to the end of the tip-bending former. Fig. 12is a perspective view of the sliding table.

l represents the sills of the machine, upon which are secured cross-timbers 2.

3 represents standards secured in a verti- Serial No. 68,287. (No model.)

cal position upon the sills and cross-timbers 5o of the machine, upon which are mounted the superstructure or top 4. of the frame of the machine. One end of the table is partially covered by means of the boards forming a top 5, in each of which is formed an elongated slot 6, to be hereinafter referred to. A shaft 7, provided with a suitable worm 9, is mounted in suitable bearings 8, secured upon the crosstimbers of the frame. Shafts 10, each of which is journaled at its lower ends in one 6o of the cross-timbers and at its upper end in the top of the frame of the machine, have keyed thereto, near their lower ends, lgear- Wheels 11, adapted to mesh with the worm upon the shaft 7, and above each of the gearwheels 11 is a pinion 12.

Secured around each of the shafts l0 is a sleeve 13, connected with another sleeve 14 by integral arms 15, and journaled in each of the sleeves la is a shaft 16, upon the lower 7o end of which is keyed a segmental rack 17, adapted to mesh with one of the pinions 12 upon one of the shafts lO. It will thus be seen that the sleeves 13 and 14L and the arms 15 are adapted to swing, and for the purpose 75 of brevity I will refer to them as a swinging frame.

The upper end of each of the shafts 16 extends through the slot 6 and above the plane of the top 5 of the machine and has secured Se to said end a heel-former 17, provided with an upturned flange 18 and an outer rim member 19, provided with an upturned ange 20, which is fastened to the upturned ange 18 by bolts 21, passing through the fiange 18 into 85 the upturned flange 20. The member 19 has a vertical wall 22 of proper curvature to give the required form to the heel of the shaft, against which wall the shaft is braced while the heel is being bent. In line with the face 9o of the vertical wall 22 is a hook 23, adapted to be engaged by the shoe 8l, carried' by a strap 80, hereinafter described. When in position upon the machine, the rims 19 of the heel-formers are disposed toward one another, and are adapted to bear against one another to prevent the two shafts being operated upon being forced inward toward each other While they are not supported and held apart by the former-base. The effect of this can be seen more clearly in Fig. 6. The strain exerted by the shaft 76 on the hook 23 during the operation of bending the heels causes the rims 19 of the heel-formers 17 to press heavily against each other, and these rims are of proper width to maintain the last point of contact of the shaft 76 with the wall 22 in line with the body of the shaft 76.

25 is a gear-wheel secured on one end of the shaft 7, adapted to intermesh with a gearwheel 28, rigidly keyed to the shaft 29, which is journaled in suitable bearings 30, secured to the sill of the machine, said shaft being provided with suitable band-pulleys 31 and 32, connected to the shaft by means of a suitable cone-clutch 33.

35 is a sliding table mounted at one end and within the center of the frame of the machine, said frame being provided with crosstimbers 36, on which is journaled ashaft 37, having suitable bearing 38, said shaft being provided with a worm-gear 39.

is a shaft journaled in the sliding frame, near one end thereof, on which is keyed at each end a pinion 41.

42 is a segmental gear keyed to the shaft 40 and adapted to intermesh with the wormgear 39 on the shaft 37.

43 is a yoke having depending arm or rod 44, on the lower end of each of which is formed a rack 45, the teeth of which are adapted to intermesh with the pinions 41 on the shaft 40, as clearly shown in Fig. 2.

46 represents blocks keyed to the shaft 40 on each side of the segmental gear 42, said blocks being provided with cam-grooves 47. (See Fig. 1.)

Shafts 48 are each secured upon opposite sides of the sliding table and carry workbraces 49 50, which are operated by arms 5l, keyed to and depending from the shafts 48, said arms 51 being provided with pins or studs 52, which project into the grooves 47 of the blocks 46.

The shaft 37 is provided with a bevel-pinion 53, which meshes with a bevel-pinion 54, mounted on a shaft 55, the other end of said shaft being provided with a bevel-pinion 56.

To permit the sliding table 35 to move, the shaft 37 is provided with a feather which permits the shaft to move axially, but forces the pinion 53 to turn therewith, this pinion being held against movement between the pinion 54 and the bearing of the shaft.

57 is a shaft upon which is mounted the band-pulleys 58 and 59, said pulleys being operatively connected to said shaft by means of the cone-clutch 60, one end of said shaft 57 being provided with a bevel-pinion 61, adapted to mesh with the bevel-pinion 56.

62 is a shifting rod adapted to operate the clutch by means of the handle 63.

The clutch 33 is connected by means of a shifting rod 33a to an operating-handle 33h.

64 is the base of a former having asuitable curvature at the top and rests upon the top of the main frame 4 in such a manner as to be movable longitudinally on top of said main frame.

65 is a tip-former secured to the base 64 by means of the hinge 66, the top of said hinge being bent over, as at 67, to embrace the top of the tip-former. The tip-former comprises two members secured together and parallel with each other, whereby the former is adapted to straddle the projection 68 on the top of the former-base 64, said projection having a staple 69, through which a pin 7O is adapted to pass and extend over the tip-former, thereby locking said former down upon the base 6.4,as shown in Figs. 6 and 7. The lower member 67a of the hinge is connected to two straps 71 by means of the rivets 72, the rear end of said straps being countersuuk,as at 73, within the body of the base 64 and anchored therein by means of the bolt or screw 74, as shown in Fig. 7, there being two of these straps,'one on each side of the projection 68 of the base 64. The lower member 67a of the hinge is provided with four projections 75, formi-ng two pairs, so that the tip of a shaft 76 may be confined between each pair.

76a is a plate secured upon the base 64, having an upward projection 77, in which a bolt 78 is revolubly secured, said bolt being provided with a follower-nut 79.

8O is a strap or band secured around the nutl79 at its center, the ends of the band secured lirmly to a catch or shoe 8l, said shoe or catch having a pocket 82 formed therein and provided with a rearwardly-extending projection or hook 83, adapted to be engaged by the hook 84 on the tie-rod 85, said'tierod being adjustably secured to another rod 86, pivotally secured to one side of the base 64, as at 87, engaging faces of the respective tierods being serrated, as at 88, which are interlocked firmly by means o f the bolt and nut 89.

It will be noted that the strap 8O bears against one surface of the shaft 76, while the opposite surface of said shaft bears against the wall 22 of the heel-former 17a and that the straps 80 can be extended by means of the bolt and nut 78 and 79, thereby providing for different lengths of shafts and different cnrvatures of the heel bend of the shaft. The member 19 of the heel-former 17a is detachably secured to the heel-former, so that different forms of members 19 may be readily attached and detached according to the style of heel bend desired.

The operation of the machine is as follows: The strips of wood 76 to be bent into the form of a shaft are placed upon the base 64, the tips of each of the pieces of wood being se- IOO IIO

cured in position between two of the proand 53 to shaft 37, which shaft in its revolution operates worm 39, which in turn operates the segmental gear 42, thereby revolving the shaft 40, which by means of the pinions 41 and rack 45 draws the yoke 43 down upon the former 65 until the wood comprising the shaft is given the desired tip bend, and when the former 65 is in its lowermost position it is secured in that position by means of the pin being passed through the staple 69 in the projection 68 on the base 64. Simultaneous with the movement of the yoke the cam-grooves 47 in the blocks 46 throw the pins 52, so that the braces 49 and 50 are firmly clamped against the sides of the shaft, as shown in Fig. 2.

Referring to Fig. 10, it will be seen that the pivot of the hinge of the former 65 is back of the end of the shaft. Thus in forcing the former 65 down to the position shown in Fig. 7 and in Fig. 2 the end of the shaft is stoved, thus stoving and bending being accomplished for all practical purposes simultaneously. The object of stoving the end of the shaft while it is being bent is that the bers of the wood are compressed longitudinally, so as to provide against kinking or slivering of the outer edges of the wood. The tip of the shaft having been formed the operating mechanism is reversed by again shifting the cone-clutch 60. This causes the yoke 45 to rise and release the former-base carrying the shafts, so that it is free to be dragged by the operation of the heelbending machinery. The heel-forming mechanism is now thrown into operation by means of power applied to the gear-wheel 25 and shaft '7, upon which said wheelis keyed, thereby converting motion through the worm 9 to the gear-wheels 11, which operates the pinions 12, said pinions operating thesegmental racks 17, thereby revolving the shaft 16, to which the former 17a is keyed. Before the formers are operated the shoe S1 is securely fastened to the former by means of the hook 23 of the former entering the recess 18 of the shoe, as shown in Fig. 1 and Fig. 9. The part-s being in the position shown in Fig. 1, the shaft 16 is revolved, thereby revolving the heel foriners or benders 1'?"L until the shafts assume the position shown in Fig. 6, the lockingbars 85 and 86 are attached by means of the hook 84 to a hook 83 on the shoe S1, whereupon the base G4 may, with the shafts, be removed from the machine.

The slot 6 in the top of the machine provides means whereby the swinging arms may be moved toward or from each other in order that different forms of heel bends may be given. The heel-formers 17, carried by the swinging frame 15, may be swung toward or from each other by hand to bring them into position so the hook 23 will enter the recess 82 of the shoe 81. The heel-foriners are then ready to be revolved by power to produce the heel bend. Another object of providing the swinging arms is that the heel-former is free to be pressed forward toward the center of the table and against the shaft which is being bent through the entire process of bending the heel of the shaft, thereby causing the shaft to be bent regularly and uniformly and not allowing it to kink or break out in weak points.

I claim- 1. The combination with the main frame, a removable shaft-bendingformer base, and a tip-former hinged thereto, of means carried by the frame and shiftable longitudinally thereof for dierent lengths of work and adapted to draw the hinged tip-former down toward said base.

2. The combination with the main frame, a removable shaft-bending-former base, and a tip-former hinged thereto, of a sliding table and means carried by the sliding-table adapted to draw the hinged tip-former down toward the said base.

3. The combination with the main frame, a removable shaft-bending-former base, and a tip-former hinged thereto, of a yoke adapted to draw the hinged tip-former down toward the said base, and a sliding table carrying said yoke.

4. In a machine of the class described, the combination with a main frame, a removable bending-former base, and a tip-former hinged to said base, of a yoke provided with racks and adapted to draw the said tip-former down toward the bending-former base, and a sliding frame carrying said yoke and a pinion adapted to mesh with the racks of the yoke.

5. In a machine of the class described, the combination with the main frame, a removable bending-former base, and a tip-former adapted to be drawn toward the same, of a sliding frame carrying a shaft, a Worm-wheel upon the shaft, a second shaft mounted above the first shaft, a segmental gear keyed to the second shaft, and meshing with the wormwheel, pinions carried by the second shaft, a yoke adapted to draw the tip-former down toward the bending-former base, and racks upon the yoke in engagement with the pinions.

6. In a machine of the class described, the combination with a main frame, a removable bending-former base, and a tip-former adapted to be drawn down toward said base, of a table shiftable for different lengths of work carried by the main frame, and lateral workbraces carried by said shiftable table.

7. In a machine of the class described, the combination with a main frame, a removable bending-former base, and a tip-former adapted to be drawn down toward said base, of lateral work-braces and means for drawing the tip-former toward the said base, both shiftable simultaneously for different lengths of work.

8. In a machine of the class described, the combination with a main frame, a removable bending-former base, and a tip-former, of a sliding table carrying a shaft, Worrn-wheel on the shaft, a second shaft mounted above the IOO first shaft, a segmental gear keyed to the second shaft and meshing with the worm-wheel, pinions carried by the second shaft, a yoke operated to draw the tip-former toward the bending-former base, racks upon the yoke in engagement with the pinions and work-braces moving laterally toward the work operated by the tip-former-operating mechanism.

9. In a machine of the class described, the combination of a main frame, a removable bending-former base and a tip-former, of a .table shiftable for different lengths of work carrying a shaft, a worm-Wheel on the shaft, a second shaft mounted above the first shaft, a segmental gear keyed to the second shaft and meshing with the Worm -gear, pinions carried by the second shaft, a yoke operated to draw the tip-former toward the base, racks upon the yoke in engagement with the pinions, cam -blocks secured upon the second shaft 48,'arms provided with pins secured to the shafts 48, and working on the cam-blocks and Work-braces also secured to the shafts 48.

lO. In a machine of the class described, the combination of a pair of heel-formers, each provided with a rim disposed toward and bearing against the other.

1l. In a machine of the class described, the combination of a pair of heel-formers having supporting-shafts and a swinging movement therewith and movable bodily with the shafts toward and from one another.

l2. In a machine of the class described, the combination of a swinging frame, a shaft journaled therein, a heelformer mounted upon the shaft and means for communicating motion to said shaft.

13. In a machine of the class described, the combination of a fixed shaft, a swinging frame secured thereon, a second shaft journaled in the swinging frame, a pinion on the fixed shaft, a segmental rack upon the second shaft meshing with the pinion, means for communicating motion to the fixed shaft and a heelformer mounted upon the second shaft.

' lll. In a machine of the class described, the

combination with the heel-former, of a swinging arm upon which the heel-former is mounted permitting the said arm to move toward and from the center of the machine to main tain the successive points of contact of different curves or bends in the form in the same line longitudinally of the machine.

15. In a machine of the character described,

'the combination with the shaft-bending form and a clamping member or tip-former hinged to the forward end of the bending-form, of a yoke embracing the said tip-former, and means below said bending-form for gradually drawing said yoke downward toward the said bending-form, thereby gradually depressing said tip-former and holding it in its depressed position upon the bending-form.

16. In ashaft-bender, the combination with the base of the former, a tip-formervand a hinge having its hinged joint below the shaft to be operated upon and connecting the tipformer and base, of means adapted to` force the tip-former down toward the base upon the work.

17. In ashaft-bender, the combination with the base-former and a combined hinge and device for upsetting the shafts connecting the tip-former with the base and means adapted to draw the tip-former down toward the base upon the work.

18. In a shaft-bender, the combination with the base of the former, a tip-former and a hinge connecting the tipformer and base having its hinged axis a greater distance from the bending-face of the tip-former than the thickness of the work to be operated upon, and means adapted to draw the tip-former down toward the said base and upon the work. In testimony whereof I have subscribed my name to this specification in the presence of two subscribing witnesses.

CLETUS N. ALLERDING.

Witnesses:

L. V. ARMENTROUT, FLORENCE MITCHELL. 

